DE2658294C2 - Device for separating and feeding flat objects stored in a reel of shingled belts with retaining straps to subsequent stations - Google Patents

Description

The invention relates to a device for separating and for supplying holding straps in one Shingle belt roll stored flat objects to subsequent stations according to the generic term of claim 1 according to patent 25 26 432.

In the device according to the main patent, the supply roll consisting of the flaky belt roll is used when unwinding synchronously with the withdrawn scale in rotation, so that the to allow individual flat objects to be conveyed away in scales on top of each other. If the to be transacted Supply roll consists of a scale tape roll made of paper bags, it can happen that as a result of When winding the supply roll from the bottom of these sacks leaked glue individual sacks with sacks glue the previous layer so that they stick to the supply roll when unwinding and that interfering with or interrupting the continuous removal of the scale.

The object of the invention is therefore to improve the device according to the main patent in such a way that With this also supply rolls of flat objects, such as paper sacks that come with their rear ends are glued to the following layer, allow them to unwind without interference.

This object is achieved by the features specified in the characterizing part of claim 1.

The supply roll to be unwound consists of a coiled shingle belt in which the the rear end of the first flat object is covered by the following one. Press while unwinding the sacks the following from the supply roll, so that one of the rolled-up shingle belt corresponding scale band forms.

In the case of the claimed solution according to the application, the roller pressing on the imbricated belt has the effect an increased frictional force between the sack that has just been unwound and the two of them enclosing sacks as well as the endless belts, so that the individual sacks can also be used without disturbing one uniform scaling function can be withdrawn from the supply roll if it is free of overlap Ends are glued to this. The distance between the roller and the unwinding point on the supply roll in which to detach the sacks from this should not significantly exceed a sack length, as this would result in frictional engagement any bags stuck to the roll are too small and the peeling effect resulting from the imprint of the The shingle belt from the supply roll is too small to remove even stuck sacks from the supply roll deduct.

The roller can press under its force of gravity on the unwound scale belt or additionally also be loaded by a spring.

The roller expediently presses on the deflection roller arranged at the outlet end of the frame.

When unwinding the supply roll, its through-

knife from an initially maximum size to a minimum value, the size of the unwound Role corresponds to. To compensate for the growing distance between the supply roll and the pressure roller, by which the last removed sacks would no longer be gripped by the pressure roller, is the Supply roll arranged on the pivotable arms so that they can be attached to the during the run-off of the scale Belts can be pivoted

To control the swivel movement of the swivel <'i ble arms are attached to the frame carrying the role, the switch positions of the Switches are located in planes, the setting movement of the frame carrying the roles within narrow limits keep. The swiveling arms are directed towards the frame carrying the π rollers when the diameter the supply roll decreases and the frame carrying the rolls has reached one limit as long as it is moved on until the frame reaches the other limit by switching the second switch - < > reports.

In a fixed arrangement of the supply roll according to the main patent, the tapes are on the The frame supporting the rolls can be swiveled to the supply roll. The pressure roller is expediently -i to the belts movably mounted in such a way, JaB the distance between the point of contact of the belt remains the same with the supply roll and the pressure roller.

The pressure roller is preferably mounted on guide carriages guided in guide tracks. ω

In an embodiment of the additional application, the guideways are fixed to the frame, so that the structure the device is simple.

In a further embodiment, the guideways are connected to pivotable levers that are fixed to the frame, which are moved in dependence on the pivoting movement of the frame carrying the rollers. Through this builds the device short.

Appropriately, the pivotable levers are connected to the frame carrying the rollers Driving lever, so that a simple structure of the short variant is achieved.

An exemplary embodiment is shown in the drawing and is explained in more detail below. It shows

Fig. 1 is a side view in which the front side part of the frame is omitted, with a fixed arranged pressure roller that can be pressed against a belt guide roller,

FIG. 2 like FIG. 1, but with a pressure roller guided in frame-mounted linear guides, ^w

Fig. 3 like Fig. 1, but in pivotable levers mounted guideways for the pressure roller.

F i g. 1 shows a device similar to that of the main patent with one of two side parts 1 and 2 formed frame 3, in which a shaft 4 is rotatably mounted, which is attached to the frame 3 by a Gear motor 5 can be set in rotation with self-locking. Arms 6 and 7 are on shaft 4 attached, which have receiving caps 8 at their end. The arms 6, 7 can approximately be in one position 6.1 and 7.1 are pivoted in which they with their A'ifnahmkalotten 8 a mounted in a supply roll 10 axis 9 in the position 10.1 Detect the supply roll 10 located and from which they the supply roll 10 by rotating the shaft 4 in the mil raise the unwinding position drawn in full lines. A rotary brake 69 is arranged on the axis 9, which made of two halves in the manner of a pony's bridle

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⁴⁵ consists, which have semicircular recesses 70 which fit onto the axis 9 and which are covered with material similar to brake linings. The two halves are pressed against the axle 9 by screws 71. A bolt 72 is firmly attached to the frame 3 or to one of the arms 6 or 7, against which one half of the rotary brake 69 is applied or transferred to one of the arms 6 or 7. The torque of the brake can be adjusted by turning the screws 71.

In the frame 3, a shaft 11 is also rotatably mounted, to which a frame 12 consisting of two arms and two arms 13 are attached. On the arms 13 are those Piston rods articulated by pressure medium piston cylinder units 14, the cylinder body of which is attached to the frame 3 are pivotably mounted.

In the frame 3 guide rollers 16 to 20 and on the frame 12 a guide roller 15 are rotatable stored, by the conveyor belts 2! be led that together with the guide rollers 15, 16 form a drive element for the supply roller 10. The conveyor belts 21 also run over a roller 22 which is driven by a gear motor 23. By the pressure medium piston cylinder units 14 become the belts 21 in the area between the guide rollers 15 and 16 pressed against the supply roll 10. The guide roller 16 is rotatably mounted on the shaft 11 and serves at the same time to guide the leading to the supply roll as well as that of the supply roll running strands of the conveyor belts 21. In the area of the guide rollers 16 and 20, the bag flake held against lowering by a table 24, the table being under the running down from the supply roll 10 Strands of the conveyor belts 21 is recessed. On the frame 3 are spools 25 for winding the from Holding belts 26 withdrawn from the supply roll 10 and driven by rotating field magnets 27.

The retaining straps 26 are over the guide rollers

20 deflected downwards. Below the table 24 two band guide plates 29 are arranged, each one Have guide hole through each of which a retaining strap 26 is guided and in the direction of the reels 25 by about Is deflected by 90 °. Furthermore, a guide rod 30 that can be pivoted back and forth is next to the bobbins 25 provided, in the front end there are two bores 31 through which the retaining straps 26 to the coils 25 run. A cam disk, not shown, is driven by the gear motor 23, through which a reciprocating movement of the guide rod 30 in accordance with the advance of the conveyor belts

21 is achieved. As a result, the retaining straps 26 are wound onto the reels 25 evenly over their length.

In alignment with the conveyor belts 21 running towards the guide roller 20, further belt guides are arranged, of which only the tape guide 32 is shown. They run faster than the conveyor belts 21, so that the sacks arriving as flakes on the conveyor belts 21 on the belt guide 32 are separated, the bags are then next to each other and by the grippers of automatic bag attaching machines can be detected.

Above the guide roller 16, a pressure roller 33 is arranged, which can be rotated in tabs 34 on both sides is stored. The tabs 34 are fixedly connected at their other end to a shaft 35, which in frame-mounted bearings is rotatably mounted.

The pressure roller 33 presses the flake sack pulled off the supply roll 10 onto the belts 21 or the Guide roller 16 either by its own weight or a force of a spring or the like, so that the Sack flakes run synchronously together with the belts 21 and the bag flakes without interference or Interruption can be withdrawn from the supply roll 10.

Two limit switches 36,37 are attached to the frame 3, whose switch tappets are directed towards one of the arms of the frame 12 and a certain distance from them exhibit. The limit switches 36,37 are actuated when the frame 12 moves from the position shown is pivoted up or down. You are with the gear motor 5 or with a not shown Intermediate connection electrically connected. The limit switch 36 switches the gear motor 5 on and the Limit switch 37 off again.

So when the bag flake is unwound from the supply roll 10, its diameter decreases and the Frame 12 is pivoted upward by the pressure medium piston cylinder unit 14 until the switch 36 is actuated. As a result, the gear motor 5 starts up and moves the arms 6, 7 clockwise downwards, and the frame is pivoted downward against the force of the pressure medium piston cylinder unit 14 until he reaches the limit switch 37, by actuating the gear motor 5 is stopped. This remains the distance between the point of contact of the supply roll 10 with the tapes 21 and the Pressure roller 33 almost constant, so that the bags are pulled off the supply roll 10 without interference can be, even if the bottom of a sack of the withdrawn scale with the on the supply roll 10 sacks located is glued, since the scale is always pressed against the belts 21 by the pressure roller 33 and is taken away by them.

In Fig. 2 is the position of the supply roll 10 during the Peeling off the scale kept constant and another pressure roller, which is denoted by 38, moves parallel to itself with the pivoting movement of the frame 12. In addition to the frame 12 are to this Purpose attached to both sides fixed guide tracks 39, in which slide 40 easily slides are stored. The slides 40 have bores 41 in which the bearing journals of the pressure roller 38 are loose are rotatable. With the reduction in diameter of the supply roll 10 when unwinding the bag flake the frame 12 moves upwards as a result of the force of the pressure medium piston cylinder unit 14. With this movement move the slide 40 in their guide tracks 39, while the pressure roller 38 through 1> its own weight the sack scale on the belts 21 presses. With a corresponding inclination of the guideways 39 to the vertical remains, as shown in FIG see, the distance of the point of contact between the supply roll 10 and that of the pressure roller 38 with the Bands 21 almost the same.

According to FIG. 3 are guide tracks, which are designated there by 42, arranged on levers 43 in which the the slide 40 carrying the pressure roller 38 are slidably mounted. The levers 43 are on both sides on one j) shaft 44 attached, which is mounted loosely rotatably fixed to the frame. They are loaded into one by a spring 47 a new supply roll 10 favorable position pulled to the right. With the frame 12 or with the shaft 11 are Drive levers 45 firmly connected on both sides, which carry rollers 46 on their free ends. The roll 46 run against the lever 43 on and move this pivoting to the left about the shaft 44 when the frame 12 after and after the supply roll 10 swings up with decreasing diameter. This will make the pressure roller Ji 38 led to the supply roll 10 and the distance between them Points of contact with the belts 21 are kept approximately constant.

For this purpose 3 sheets of drawings

Claims (8)

Patent claims: 1. Device for separating and feeding with retaining straps in a shingle band roll stored flat objects to subsequent stations with a frame, the warehouse for Pick-up of the shingled belt roll and for picking up the one with the unwound shingled belt contains withdrawn retaining straps wound spools, provided with a driven roller Device for unwinding the shingle belt roll and with one the unwound shingle belt further conveying belt, to which a conveyor device rotating at a higher speed is attached to <5 closes, which separates the flat objects from the scale belt and these one after the other a device transported to the filling machine, with a device for separating in valve sacks stored in a shingle belt roll and for their transport to the filling machine in the frame (3) at opposite ends of the rollers (15, 16) supporting frame (12), with a An endless belt (21) running over the rollers (15, 16), the frame (12) being attached to the imbricated belt roller (10) or this is adjustable to the frame (12) in such a way that the endless belt (21) for Drive of the imbricated belt roller (10) between the rollers (15, 16) presses on the circumference, and that Belt (21) for the formation of the belt which further transports the valve sacks lying on top of one another is guided over further rollers (16-20) mounted in the frame (3), according to patent 25 26 432, thereby characterized that at most at a distance of a length of the sacks to be unwound from their a roller (33, 38) is arranged from the imbricated belt roll (10) in each case just lifting off point which presses the unwound scale belt against the endless belts (21) 2. Apparatus according to claim 1, characterized in that the supply roll on the pivotable Arms (6,7) can be pivoted to the belts (21) 3. Device according to claims 1 and 2, characterized in that the frame (3) on the the roller-bearing frame (12) directional limit switches (36, 37) are attached, wherein the Switching positions of the limit switches (36, 37) lie in planes that the adjustment movements of the rollers Keep the supporting frame (12) within narrow limits. 4. Apparatus according to claim 1, characterized in that the pressure roller (38) to the belts (21) is movably mounted 5. Apparatus according to claim 1 and 4, characterized in that the pressure roller (38) on in Guideways (39, 42) guided guide carriage (40) is mounted 6. Apparatus according to claim 1, 5 and 5, characterized in that the guide tracks (39) are fixed to the frame. 7. Device according to claims 1 and 4 to 5, characterized in that the guide tracks (42) with pivotable levers fixed to the frame (43) are connected, depending on the pivoting movement of the frame supporting the rollers (12) are movable. 8. Device according to claims 1 and 7, characterized in that the pivotable Lever (48) with the roller-bearing frame (12) connected drive lever (45) rest.